Mercury 3 - 275 HP Outboards 1990 - 1993

Clymer Owners Marine Service & Repair Manual

1990, 1991, 1992, 1993

by Clymer Staff

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Mercury 3 - 275 HP Outboards 1990 - 1993 - Front Cover

Front Cover

Front Cover

description

Mercury 3 - 275 HP Outboards 1990 - 1993 Clymer Owners Marine Service & Repair Manual Covers the following models:
● Mercury 3 HP (1990-1993)
● Mercury 3.3 HP (1990-1993)
● Mercury 4 HP (1990-1993)
● Mercury 5 HP (1990-1993)
● Mercury 8 HP (1990-1993)
● Mercury 9.9 HP (1990-1993)
● Mercury 15 HP (1990-1993)
● Mercury 20 HP (1990-1993)
● Mercury 25 HP (1990-1993)
● Mercury 40 HP (1990-1993)
● Mercury 50 HP (1990-1993)
● Mercury 60 HP (1990-1993)
● Mercury 75 HP (1990-1993)
● Mercury 90 HP (1990-1993)
● Mercury 100 HP (1990-1993)
● Mercury 115 HP (1990-1993)
● Mercury 135 HP (1990-1993)
● Mercury 150 HP (1990-1993)
● Mercury 150XR4 (1990-1993)
● Mercury 150XR6 (1990-1993)
● Mercury 150XRi (1990-1993)
● Mercury 175 HP (1990-1993)
● Mercury 175XRi (1990-1993)
● Mercury 200 HP (1990-1993)
● Mercury 200XRi (1990-1993)
● Mercury 250 HP (1990-1993)
● Mercury 275 HP (1990-1993)

Contents:
QUICK REFERENCE DATA

GENERAL INFORMATION
Manual organization / Notes, cautions and warnings / Torque specifications / Engine operation / Fasteners / Lubricants / Gasket sealant / Galvanic corrosion / Protection from Galvanic corrosion / Propeller / Specifications

TOOLS AND TECHNIQUES
Safety first / Basic hand tools / Test equipment / Service hints / Special tips / Mechanic's techniques / Specifications

TROUBLESHOOTING
Operating requirements / Starting system / Charging system / Ignition system / Breaker-point ignition troubleshooting (1990-1992 3 hp models) / Capacitor discharge ignition (CDI) / Direct voltage tests / Resistance test / Speed limiter / Spark advance/idle stabilizer module troubleshooting / Fuel system / Engine / Specifications

LUBRICATION, MAINTENANCE AND TUNE-UP
Lubrication / Proper fuel selection / Recommended fuel mixture / Fuel mixing procedure / AutoBlend II injection system / Constant ratio oil injection / Variable ratio injection system / Lower drive unit lubricant change / Propeller shaft lube / Saltwater corrosion of gear housing bearing carrier and nut / Storage / Anti-corrosion maintenance / Complete submersion / Flushing the cooling system / Tune-up / Compression test / Spark plug plugs / Lower unit and water pump check / Fuel system service / Fuel line and hoses service / Fuel filter service / Fuel pump (all models except fuel-injected models) / Fuel pressure test / Battery and starter check / Starter solenoid check / Alternator and rectifier check / Ignition timing, synchronization and adjustment / On-boat performance test / Specifications

TIMING, SYNCHRONIZING AND ADJUSTING
Ignition timing and synchronization / 3 hp models / 3 and 5 hp models / 8, 9.9 and 15 hp models / 20 and 25 hp models / 40 hp models / 50 and 60 hp models (prior to serial No. D000750) / 50 and 60 hp models (serial No. D000750-on) / 75 and 90 hp models / 100 and 115 hp models / 135-200 hp (except EFI) models / 250 and 275 hp models / 150Xri, 175Xri and 200Xri (EFI) models / Specifications

FUEL SYSTEM
Fuel pump / Carburetors / Throttle plunger carburetor (3 and 3.3 hp models) / Integral fuel pump carburetor (4 and 5 hp models) / Integral fuel pump carburetor (8-25 hp models) / WMA carburetor (40 hp models) / MerCarb center bowl carburetor (50 and 50 hp models prior to serial No. D000750) / WME carburetor (50 and 60 hp serial No. D000750-on, 75, 90, 100 and 115 hp models) / WMH carburetor (135-200 hp models) / MerCarb center bowl carburetor (250 and 275 hp models) / Thermal air valve (135-200 hp models) / Enrichment valve and choke solenoid systems / Anti-siphon devices / Fuel filter / Fuel tank / Fuel hose and primer bulb / Electronic fuel injection (EFI) / Fuel management tests / Specifications

IGNITION AND ELECTRICAL SYSTEMS
Battery / Battery charging system / Starting system / Magneto breaker point ignition / Capacitor discharge ignition (CDI) (1993 3.3 hp models) / Capacitor discharge ignition (CDI) (4-275 hp models) / Specifications

POWER HEAD
Engine serial number / Gaskets and sealants / Fasteners and torque / Power head / Specifications

LOWER UNIT GEAR HOUSING
Service precautions / Gear housing / Water pump / Bearing carrier and propeller shaft / Pinion gear, drive shaft and forward gear / Lower shift shaft, bushing and cam / Pinion depth/gear backlash / Propeller / Trim tab adjustment / Specifications

POWER TRIM AND TILT SYSTEM
Manual tilt assist system / One-ram integral power trim system (40-60 hp models) / Three-ram integral power trim system (75-200 hp models) / One-ram oildyne power trim system (250-275 hp models) / Power trim assembly removal/installation / Power trim motor and pump assembly removal/installation / Specifications

OIL INJECTION SYSTEM
Autoblend II (50 and 60 hp prior to serial No. D000750) / Constant ratio oil injection (40 hp and 50-60 [serial No. D000750-on] hp models) / Injection system service / Variable-ratio oil injection (75-115 hp models) / Warning horn system / Injection system service / Variable-ratio oil injection (V6 models) / Warning hose system / Injection system service / Specifications

MANUAL REWIND STARTERS
3 and 3.3 hp models / 4 and 5 hp models / 8, 9.9, 15, 20 and 25 hp models / 40 hp models / Specifications

WIRING DIAGRAMS

Clymer marine manuals can save you money on maintenance and repair. Step-by-step procedures and detailed illustrations guide you through every job, from routine maintenance and troubleshooting, all the way to complete teardown & rebuild.

General information on Repair Manuals

Please note that workshop manuals are usually written for models sold in a specific country. Differences in specification can exist between models sold in different countries and items such as engines can vary. Please check that the manual will cover your model before purchase and if you are unsure please contact us first.

product details

  • Publisher: Clymer Publications
  • ISBN: 0892875682 (0-892-87568-2)
  • ISBN-13: 9780892875689 (978-0-892-87568-9)
  • Format: Softcover, 620 pages
  • Date Published: 07-01-1993

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